Hello Andreas, This issue is reproducible in case the “large_dir” option is set initially. The partition is fresh, created just before the test started. 1560000 names created ln: failed to create hard link 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001571063': File exists ln: failed to access 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001571384': Structure needs cleaning ln: failed to access 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001572335': Structure needs cleaning ln: failed to access 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001573095': Structure needs cleaning ln: failed to access 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001574809': Structure needs cleaning ln: failed to access 'n0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001576070': Structure needs cleaning Best regards, Artem Blagodarenko > On 27 Jul 2021, at 09:22, Andreas Dilger <adilger@xxxxxxxxx> wrote: > > On Jul 22, 2021, at 8:23 AM, Carlos Carvalho <carlos@xxxxxxxxxxxxxx> wrote: >> >> There is a bug when enabling large_dir in 5.12.17. I got this during a backup: >> >> index full, reach max htree level :2 >> Large directory feature is not enabled on this filesystem >> >> So I unmounted, ran tune2fs -O large_dir /dev/device and mounted again. However >> this error appeared: >> >> dx_probe:864: inode #576594294: block 144245: comm rsync: directory leaf block found instead of index block >> >> I unmounted, ran fsck and it "salvaged" a bunch of directories. However at the >> next backup run the same errors appeared again. >> >> This is with vanilla 5.2.17. > > Hi Carlos, > are you able to reproduce this error on a new directory that did not hit > the 2-level htree limit before enabling large_dir, or did you only see this > with directories that hit the 2-level htree limit before the update? > Did you test on any newer kernels than 5.2.17? > > Cheers, Andreas > > > > >